[Webkit-unassigned] [Bug 175763] Speedometer: Update to modern Preact version

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=175763

--- Comment #11 from Ryosuke Niwa <rniwa at webkit.org> ---
So it looks like this change worsens Safari's score by ~8% and improves Chrome's score by ~6% and Firefox's score by ~4%.

In fact, "git diff 8.2.1 7.1.0 src/" in preact repository shows suspicious changes like https://github.com/developit/preact/commit/3f38738eb300a550a51088e3f6992c92685e89a5

Since we're trying to estimate how real world apps behaves, not necessarily trying to measure how specific set of libraries and frameworks behave, it's not great to have these V8 specific optimizations in libraries & frameworks we include in Speedometer since it introduces a bias in our estimation.

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